The sysfs core now allows instances of 'struct bin_attribute' to be
moved into read-only memory. Make use of that to protect them against
accidental or malicious modifications.
Signed-off-by: Thomas Weißschuh <linux@xxxxxxxxxxxxxx>
---
drivers/usb/core/sysfs.c | 12 ++++++------
1 file changed, 6 insertions(+), 6 deletions(-)
diff --git a/drivers/usb/core/sysfs.c b/drivers/usb/core/sysfs.c
index b4cba23831acd2d7d395b9f7683cd3ee3a8623c8..23f3cb1989f408ecb6b679e6cbe4857384188ae4 100644
--- a/drivers/usb/core/sysfs.c
+++ b/drivers/usb/core/sysfs.c
@@ -854,7 +854,7 @@ static const struct attribute_group dev_string_attr_grp = {
static ssize_t
descriptors_read(struct file *filp, struct kobject *kobj,
- struct bin_attribute *attr,
+ const struct bin_attribute *attr,
char *buf, loff_t off, size_t count)
{
struct device *dev = kobj_to_dev(kobj);
@@ -890,11 +890,11 @@ descriptors_read(struct file *filp, struct kobject *kobj,
}
return count - nleft;
}
-static BIN_ATTR_RO(descriptors, 18 + 65535); /* dev descr + max-size raw descriptor */
+static const BIN_ATTR_RO(descriptors, 18 + 65535); /* dev descr + max-size raw descriptor */
static ssize_t
bos_descriptors_read(struct file *filp, struct kobject *kobj,
- struct bin_attribute *attr,
+ const struct bin_attribute *attr,
char *buf, loff_t off, size_t count)
{
struct device *dev = kobj_to_dev(kobj);
@@ -913,12 +913,12 @@ bos_descriptors_read(struct file *filp, struct kobject *kobj,
}
return n;
}
-static BIN_ATTR_RO(bos_descriptors, 65535); /* max-size BOS */
+static const BIN_ATTR_RO(bos_descriptors, 65535); /* max-size BOS */
/* When modifying this list, be sure to modify dev_bin_attrs_are_visible()
* accordingly.
*/
-static struct bin_attribute *dev_bin_attrs[] = {
+static const struct bin_attribute *const dev_bin_attrs[] = {
&bin_attr_descriptors,
&bin_attr_bos_descriptors,
NULL
@@ -944,7 +944,7 @@ static umode_t dev_bin_attrs_are_visible(struct kobject *kobj,
}
static const struct attribute_group dev_bin_attr_grp = {
- .bin_attrs = dev_bin_attrs,
+ .bin_attrs_new = dev_bin_attrs,
.is_bin_visible = dev_bin_attrs_are_visible,
};
---
base-commit: bcde95ce32b666478d6737219caa4f8005a8f201
change-id: 20241222-sysfs-const-bin_attr-usb-6ff7605a0571
Best regards,
--
Thomas Weißschuh <linux@xxxxxxxxxxxxxx>
